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All Journal Coreid Journal International Journal of Learning Media on Natural Science
Amelia, Silmi Rahma
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Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Environmental Science Other

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Investigating the Performance of Serial and Parallel Smith-Waterman Algorithm Implementations for Genetic Sequence Alignment Using OpenMPI Fitriani, Nita Dwi; Amelia, Silmi Rahma; Muttaqien, Fahdzi; Ivansyah, Atthar Luqman
CoreID Journal Vol. 2 No. 2 (2024): July 2024
Publisher : CV. Generasi Intelektual Digital

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.60005/coreid.v2i2.34

Abstract

Deoxyribonucleic acid (DNA) is composed of nucleotide chains containing nitrogenous bases, phosphate groups, and pentose sugars, with variations primarily occurring in the sequence of nitrogenous bases. The analysis of DNA sequences often employs the Smith-Waterman algorithm for sequence alignment, a fundamental technique in bioinformatics. This research evaluates the performance of the Smith-Waterman algorithm across varying sequence lengths (10, 102, 103, and 104) using both serial and parallel implementations with the OpenMPI library. The study focuses on measuring execution times and speedup on 4, 6, 10, 12, and 24 cores. Results indicate that while execution times increase with longer sequences, parallelization significantly reduces processing time for sequences longer than 102. However, smaller sequences exhibit higher overhead on shorter lengths. The findings underscore the importance of efficient parallel programming and task allocation strategies in optimizing computational performance for DNA sequence analysis.
Development of Augmented Reality-Based Learning Media on Atomic Absorption Spectrophotometer (AAS) Material Nasution, Nur Fauzi’ah; Farida, Ida; Sukmawardani, Yulia; Amelia, Silmi Rahma
International Journal of Learning Media on Natural Science (IJLENS) Vol. 2 No. `2 (2025): August
Publisher : CV. Generasi Intelektual Digital (GEN ID)

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Abstract

Atomic absorption spectrophotometer (AAS) instruments are not always found in universities or high schools, due to the high and complex maintenance and operation costs of these instruments. To overcome this, innovative learning media are needed that can visualize and facilitate understanding of concepts in AAS material. This study aims to describe the design of the learning media display, analyze the results of validation tests, and analyze the results of the feasibility test. The research method used is Design Based Research (DBR) with the ADDIE model approach. The results of the study are in the form of a learning media display design consisting of a home page (cover), a main menu consisting of learning objectives, instructions for use, materials, AR scans, quizzes, and compiler profiles. The material page consists of images about phenomena in everyday life and videos about the working principles of AAS, sample preparation processes, simulations of AAS data measurement and analysis, and data interpretation in the form of images and articles. The AR scan page consists of a menu of AAS components. The results of the validation test obtained an average value of 0.83, this indicates that the augmented reality-based learning media on AAS material is categorized as valid with high interpretation. Meanwhile, the results of the feasibility test obtained an average percentage value of 92.16%, this shows that augmented reality-based learning media on AAS material is very suitable for use as learning media.
Development of Interactive Website-Based Learning Media with the Assistance of Educandy on the Periodic Table of Elements Material Sari, Sari; Amaliah, Latifa; Rahmawati S, Risa; Amelia, Silmi Rahma
International Journal of Learning Media on Natural Science (IJLENS) Vol. 3 No. 1 (2026): February
Publisher : CV. Generasi Intelektual Digital (GEN ID)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.60005/ijlens.v3i1.155

Abstract

ABSTRACT Learning the periodic table of elements is often perceived as difficult because it involves abstract concepts, symbolic representations, and multiple relationships among elements that students must understand. This study aimed to develop interactive web-based learning media for periodic table material by integrating the Carrd platform with Educandy and to examine its validity and feasibility at the development stage. The study employed a Research and Development approach using the ADDIE model up to the development phase. The product was validated by five expert validators consisting of lecturers and chemistry teachers, and its feasibility was tested with 15 tenth-grade students at SMAN 1 Banjaran. The validation results showed an average score of 0.85, which was categorized as very high. Across aspects, the scores included software engineering (0.864), visual communication (0.872), functionality (0.810), learning achievement (0.883), media quality and relevance (0.790), interactivity (1.000), ease of understanding (0.830), learning guidance (0.830), and concept and theory accuracy (0.776). The feasibility test produced an average percentage of 89.13%, indicating that the media was feasible for limited use. Qualitative feedback from validators suggested improving the interface, adding supporting images, and refining several presentation elements. These findings indicate that the developed Carrd–Educandy-based learning media is valid and feasible as a learning support medium for periodic table material at the development stage.
Co-Authors Amaliah, Latifa Atthar Luqman Ivansyah Fitriani, Nita Dwi Ida Farida Muttaqien, Fahdzi Nasution, Nur Fauzi’ah Rahmawati S, Risa Ratnasari Ratnasari Yulia Sukmawardani, Yulia